export type BoardIndex = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
export type ChessPiece = 'X' | 'O'
export type BoardState = (ChessPiece | null)[]
export type DifficultyLevel = 'easy' | 'medium' | 'hard'
export type GameStatus = 'idle' | 'playing' | 'win' | 'lose' | 'draw'
